Double Helical/ Heringbone Gears

This is a Double Helical/Herringbone gear. This type of gear cancels out axial forces, so it is quiet and effective. The model I created has 30 teeth and a 10.4mm so it can perfectly slide on to a 10mm rod. If you want me to make standard Helical gears, or maybe add a 10 teeth Herringbone gear on top so it is a 1:(however many times you stack it) gear ratio let me know in the replies.